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arXiv 2608.10742math.AGmath.NT

退化族中的有限单值群与曲线的稳定度

Finite monodromy groups in degenerating families and the stability degree of curves

Séverin Philip

AI总结:

该研究计算亏格g的曲线与指定秩的半阿贝尔簇的稳定度,证明前者等于Minkowski界,通过退化族有限单值群的 specialization 结果结合素数2处显式构造完成证明。

AI中文摘要:

我们计算了亏格为g的曲线的稳定度,证明其等于经典的Minkowski界。同时计算了具有指定环面秩和阿贝尔秩的半阿贝尔簇的稳定度。证明使用了退化族中有限单值群的 specialization 结果,该结果由Krasner引理的变体得到,结合了素数2处的显式构造。

英文摘要:

We compute the stability degree of curves of genus g and show that it is equal to the classical Minkowsky bound. We also compute the stability degree of semi-abelian varieties with prescribed toric and abelian ranks. The proof uses a specialization result for finite monodromy groups in degenerating families, obtained from a variant of Krasner's lemma, together with an explicit construction at the prime 2.

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